Passing Emissions

[ppctx]

Is it difficult to pass emissions once ka-t (with or without the catalytic). Is it a matter of leaning it out and hooking the catalytic converter back up or is it just very difficult. They do the sniff test here, supposed to do visual, but I've never seen anyone checking it over.

[Ligouri Rd]

It can be, depends on the year of the car and where you are trying to pass emissions. Good luck passing the visual in Cali.

For a '95 and older car they are going to dyno it so low boost, a cat and you may pass. Some states are doing away with emissions testing on these cars so you may only have to pass once more then you are free to do what you want to the engine.

For '96 and newer, all the emissions controls need to remain intact: egr, evap, etc. You will have to figure away for the egr to still function...somehow weld the tube back into the turbo manifold. You can try to go catless and use an o2 simulator on the secondary sensor or I have seen some people fool sensor with just a spark plug defouler (which doesn't happen to fit on the '96 cars because they have that damn little sensor...fook!). You need to not be throwing any codes and get all the emissions readiness checks to set and you will pass.

I blocked off egr, tried the ole resistor in place of the egr temp sensor, and used an o2 secondary sensor simulator threw no codes but was unable to pass since the readiness checks wouldn't set. My car is now registered in unincorporated Wisconsin. Good luck.

[ppctx]

Hey, thanks and sorry, year would have been helpfull. It's a 93 so pre ODBII. I'm in Texas, haven't heard any rumors of stoping the sniff test here but that would be nice. At least it sounds possible to pass unlike the SR and RB swaped vehicles. I've seen thread where someone failed smog test but just wasn't sure if that was common or the norm

[S13FX]

What are the emissions laws over in TX?

[ppctx]

I guess I don’t know enough about the test to understand the question. I cant find any info on what levels are allowed in each of the categories. Here's a link to the different test performed in Texas, I live in Tarrant Co, so I get the more rigorous "ASM" test. http://www.txdps.state.tx.us/vi/act.htm The simple answer would be to reregister it in another county but I wondering about passing the normal test, does the "t" in a decently tuned ka-t typically cause failure of the emissions test

[EstoMax]

the turbo in emissions has nothign to do with it. at least in WA all you do is drive the car onto dyno, idle it they check ur exhaust (turbo does nothing). then drive it at 25mph and they check emissions (u never hit boost or any rich environment).

my turboed ka24de passed emissions better then when i was NA 2 years ago. i had a high flow cat back then and still have the same one.

[Agent 47]

I thought emissions didn't exist in texas. I lived in killeen for a year and they only checked heads., tails., and windshields (cracks). People were running around emission-less, and with open downpipe(s) lol

[ppctx]

This is funny/stupid (more stupid). Its a global issue, yet "It depends on where you register" in the US as to your good to go, or sorry buddy, you fail! I don’t know about your United State but three different testing methods in mine is stupid. Again here's how the test break down here http://www.txdps.state.tx.us/vi/act.htm

Edit, intresting to see that Austin in Travis Co., state capital which is f'ing ridlock, 24/7, has less stringent test and Tarrant Co, which only backs up if an 18-wheeler truns over in the middle of the road and has more stingent test